Circuit Description of NIM Current Integrator-Digitizer
Robert E. Shafer, USDOE Office of Science (SC), High Energy Physics (HEP) · 1972
A circuit schematic of the digitizer described in TM-391 is shown in Fig. 1.An Analog Device #41J JFET op-amp is used in the summing junction mode as a current integrator.Integration is performed across a 1000 picofarad polystyrene capacitor.The circuitry connected to the (-) input has several functions.The 51 ohm series resistor acts as a termination for fast signals.The l µF capacitor and 100 k